Latest mingw64 MinGW compiler has the headers required for enabling
wxUSE_DBGHELP, fix the warnings given by g++ when compiling wxDbgHelpDLL code.
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@67986 
c3d73ce0-8a6f-49c7-b76d-
6d57e0e08775
                     case SYMBOL_TAG_BASE_CLASS:
                         s = DumpUDT(&sym, pVariable, level);
                         break;
                     case SYMBOL_TAG_BASE_CLASS:
                         s = DumpUDT(&sym, pVariable, level);
                         break;
+
+                    default:
+                        // Suppress gcc warnings about unhandled enum values.
+                        break;
                 s = GetSymbolName(pSym) + wxT(" = ") + s;
             }
             break;
                 s = GetSymbolName(pSym) + wxT(" = ") + s;
             }
             break;
+
+        default:
+            // Suppress gcc warnings about unhandled enum values, don't assert
+            // to avoid problems during fatal crash generation.
+            break;
     SYMBOL_INFO symDeref = *pSym;
     switch ( DereferenceSymbol(&symDeref, &pVariable) )
     {
     SYMBOL_INFO symDeref = *pSym;
     switch ( DereferenceSymbol(&symDeref, &pVariable) )
     {
+        default:
+            // Suppress gcc warnings about unhandled enum values, don't assert
+            // to avoid problems during fatal crash generation.
+            break;
+
         case SYMBOL_TAG_UDT:
             // show UDT recursively
             s = DumpUDT(&symDeref, pVariable);
         case SYMBOL_TAG_UDT:
             // show UDT recursively
             s = DumpUDT(&symDeref, pVariable);